This demo shows how to build a Retrieval-Augmented Generation (RAG) application using MariaDB, OpenAI API, and Java (with no AI frameworks for learning purposes).

• Docker
• OpenAI API key

1. Set the OPENAI_API_KEY environment variable to your OpenAI API key. For example (Linux/MacOS):

export OPENAI_API_KEY=sk-example1234567890abcdef1234567890abcdef

2. Start MariaDB (see the docker-compose.yml file):

docker compose up -d

3. Check that MariaDB started successfully:

docker logs mariadb

To calculate the vector embeddings for all the products in the database, run:

./ComputeVectors.java

To run the chat demo, execute the following:

./ChatDemo.java